Insulator.



A. WEBER, JR.

INSULATOR.

APPLICATION FILED JULY 21,1905.

917,207. Patented Apr. 6, 1909.

UNITED STATES PATENT OFFICE.

AUGUST WEBER, JR, or SQHENEGTADY. NEW YQBK. ASSIGNOR 0 AUG EB 83-. 0sqnrreem r. NEW K- INSULATOR.

Specification of Letters Patent.

Patented April 6, 1909.

To all 397mm it may concern:

Beat known that I, AUGUST WEBER, Jr., a citizen of the United States,residing at Schenectady, county of Schenectady, and State of New York,have invented certain new and useful Improvements in Insulators, ofwhich the following is a specification.

The invention relates to such improvements and consists of the novelconstruction and combination of parts hereinafter described andsubsequently claimed.

Referehce may be had to the accompany ing drawings, and the referencecharacters marked thereon, which form a part of this specification.Similar characters refer to similar parts in the several figurestherein.

- Figure 1 of the drawings is a view in perspective of my improvedinsulator applied to a wire and adapted to be mounted and held togetherby an attaching screw. Fig. 2 is a view in side elevation of the sameapplied to a conductor wire and mounted upon :1 suitable support. Fig. 3is a top plan view of the cap of the same. Fig. 4 is a top plan view ofthe base of the same. Fig. 5 is a ottom plan view' of the cap of thesame. Fig. 1 is drawn on a larger scale'thanthe other figures.

The principal object of the invention is to provide an easily moldedinsulator of minimum size for a single wire.

Other objects of the invention will appear in connection with thefollowing descri tion.

The insulator comprises a base, 1, an cap, 2, each of cylindrical formand both of substantially the same'diameter. The insulator is providedwith a screw-hole, 3, extending eccentrically through both base and capparallel with the axis of the. insulator, said aperture being adaptedtoreceive an attachin screw, fi inserted therethrough into any suitablesupport, 6, with the head of the screw in enga ement with the outer endof the cap where y the base and cap are not only mounted upon andattached to said support but the cap and base are secured firmlytogether to clamp therebetween a conductor wire.

The'contiguous faces of the base and cap are grooved as shown at 4, saidgrooves extending transversely of the insulator on the opposite side ofits axis from the screwhole 3.

The grooves, 4, are located opposite each other in the base and cap sothat they together form an aperture extending transversely through theinsulator adapted to receive a conductor wire and hold the same whenthe-cap and base are drawn together by the attaching screw 5.

F or convenience in moldin the insulators which are preferably made 0porcelain it is very desirable that they be made of cylindrical form. 4

By extending the screw-hole and the wire aperture through the insulatoron op osite sides of its axial line I am able to mold the insulator ofcylindrical form, while at the same time I-employ no surplus material,thus economizing both in the weight of the insulator and in the quantityof porcelain employed in its manufacture.

The minimum size of the insulator for the work required greatly cheapensits manufacture in many ways, not only by the saving in stock, butby thesaving in the size of the dies and in the expenses of glazing, firingand shipping the article.

The base of the insulator is formed with a boss, 7, on its upper endsurrounding the screw-aperture, 3, therein, and the cap is formed with acorresponding recess or coun-, tersink, 8, in its under surfacesurrounding the screw-aperture, 3, therein, which sink or recess isadapted to receive the boss, 7, when the cap is applied to the base, andprevent transverse slipping of thecap upon the base. The said boss andrecess extend substantially to the edge of the wire-receiving grooves,4, and cooperate with the walls of said grooves when the wires arelocated therein to prevent transverse or lateral movement in, any

direction of the cap' relatively to the base, without for this purposeadding in any degree to the necessary dimensions of the insulator.

As will be seen from Figs. 4 and 5,?the screwaperture and theWire-receiving grooves, 4, at their middle portions are near theperiphery of the insulator, and substantially equal distancestherewlthin, and substantially the whole space between the screwapertureand saidgrooves isoccupled by the boss on the base, and the recess 1nthe cap which receives said boss.

The screw -.aperture and wirereceiving grooves are located as near eachother, and as near the periphery of the insulator, as is practicable,and by having substantially the whole space between them occupied byinterlooking parts, 1 am able to secure the full performance of thefunctions of the insulator members with a'minimum amount of insulatingmaterial, and with a device of minimum dimensions. What I claim as newand desire to secure by Letters Patent is-- 1'. An insulator comprisinga pair of substantially cylindrical .members provided with ascrew-aperture extended through both members on one side of the axialline thereof near the periphery of the insulator, said members beingprovided in their contiguous ends on the opposite side of said axialline each with a wire-receiving groove, which grooves are complementaryto each other, one of said members having on said end a projectionadjacent to said groove, and the other member having a correspondingrecess adjacent to said groove to receive said pro ection the space onthe contiguous ends of said members, between said screw-aper- .ture andsaid grooves, and between said screw-aperture and the outside of saidinsulator, diametrically opposite said groovm, being substantiallyoccupied by a projection on one member and a recess on the other memberadapted to receive said projection.

2. An insulator comprisin a pair of sub cylindrical mem ers providedwith a screwaperture extended through both members on one side of theaxial line thereof near the periphery of the insulator,

said members being provided in their contiguous ends on the oppositeside of said axial line each with a wire-receiving groove, which groovesare complementary to each other, one of said members having on said enda boss surrounding the screw-aperture and extending substantially tosaid groove, and

the other of said members being provided in said end with a countersinkextending substantially to said groove adapted to receive said boss.

3. An insulator comprising a pair of substantially cylindrical moldedporcelain members provided with a screw-aperture extenda each other, andare located at their middle portions substantially the same distancewithin the periphery of the insulator as said screw-aperture. r

at. An insulator comprising a pair of substantially cylindrical moldedporcelain members provided with a screw-aperture extending through bothmembers on one side of the axial line thereof near the periphery of theinsulator said members being provided in their contiguous ends on theopposite side of said axial line each with a wire-receiving groove,which grooves are complementary to each other, and are located at theirmiddle portions substantially the same distance within the periphery ofthe insulator as said screw-aperture, the space on the contiguous endsof said members between said screw-aperture and said grooves beingsubstantially occupied by a projection on one member, and a recess onthe other member adapted to receive said projection.

5. An insulator comprising a pair of substantially cylindrical moldedporcelain mem' bers provided with a screw-aperture extending throughboth members eccentrically thereof, said members being provided in theircontiguous ends each with a wire-receiving groove at one side of thecenter of the insulator, which grooves are complementary to each other,and said screw-aperture and said grooves together occupyingsubstantially the entire surface on the contiguous ends of the members.

In testimony whereof, I have hereunto set my hand this 14th day of July,1905.

AUGUST WEBER, at.

Witnesses:

EDGAR V. Nannies, MARCUS WING.

